Dynamic password generation

Abstract

Providing access to electronic information. A first password string associated with a user is received. A second password string associated with the user and a rule for configuring and generating a third password string from the second password string is retrieved from a database. The rule specifies a dynamic element to insert in the second password string based on first contextual information associated with the user. The value of the specified dynamic element is determined based on second contextual information associated with the user. Based on the rule, the third password string is configured and generated from the second password string. It is determined that the first password string matches the third password string. Access to the electronic information is granted.

What is claimed is: 
     
       1. A computer system for providing access to electronic information, the system comprising:
 a computer, a computer-readable storage medium, and program instructions stored on the computer-readable storage medium, which when executed cause the computer to perform a method comprising: 
 receiving, by a first computer from a second computer over a network, in response to information entered into a user interface on the second computer, a first password string associated with a user; 
 retrieving, by the first computer, from a database, a second password string associated with the user and a rule for configuring and generating a third password string from the second password string, wherein the rule specifies a dynamic element to insert in the second password string based on first contextual information associated with the user, and wherein a value of the specified dynamic element is determined based on second contextual information associated with the user; 
 configuring and generating, by the first computer, the third password string from the second password string, based on the retrieved rule; 
 determining, by the first computer, that the first password string matches the third password string; and 
 granting, by the first computer, the second computer access to the electronic information. 
 
     
     
       2. A computer system in accordance with  claim 1 , wherein the first computer is selected from the group consisting of a mobile computing device and a cloud computing node. 
     
     
       3. A computer system in accordance with  claim 1 , wherein the second computer is selected from the group consisting of a mobile computing device and a cloud computing node. 
     
     
       4. A computer system in accordance with  claim 1 , wherein the rule for configuring and generating a second password string includes a string generation rule for generating a string at a corresponding reference character position of the first password string, based on the second contextual information associated with the user. 
     
     
       5. A computer system in accordance with  claim 4 , wherein the string generation rule includes a pattern, which specifies that second contextual information associated with the user is to be inserted at the corresponding reference character position of the first password string. 
     
     
       6. A computer system in accordance with  claim 1 , wherein the first contextual information associated with the user and the second contextual information associated with the user comprise, respectively, one or more information selected from the group consisting of:
 a location, a time, a date, a month, a day of the week, a pin code, a predefined constant character string, a character sequence based on a grid card, and a one-time password. 
 
     
     
       7. A computer system in accordance with  claim 1 , wherein the rule for configuring and generating a second password string comprises a rule selected from the group consisting of:
 a rule defined by the user and a rule selected from a predefined set of rules. 
 
     
     
       8. A computer program product for providing access to electronic information, the program product comprising:
 a computer-readable storage medium and program instructions stored on the computer-readable storage medium, the program instructions, when executed by a computer, cause the computer to perform a method comprising: 
 receiving, by a first computer from a second computer over a network, in response to information entered into a user interface on the second computer, a first password string associated with a user; 
 retrieving, by the first computer, from a database, a second password string associated with the user and a rule for configuring and generating a third password string from the second password string, wherein the rule specifies a dynamic element to insert in the second password string based on first contextual information associated with the user, and wherein a value of the specified dynamic element is determined based on second contextual information associated with the user; 
 configuring and generating, by the first computer, the third password string from the second password string, based on the retrieved rule; 
 determining, by the first computer, that the first password string matches the third password string; and 
 granting, by the first computer, the second computer access to the electronic information. 
 
     
     
       9. A computer program product in accordance with  claim 8 , wherein the first computer is selected from the group consisting of a mobile computing device and a cloud computing node. 
     
     
       10. A computer program product in accordance with  claim 8 , wherein the second computer is selected from the group consisting of a mobile computing device and a cloud computing node. 
     
     
       11. A computer program product in accordance with  claim 8 , wherein the rule for configuring and generating a second password string includes a string generation rule for generating a string at a corresponding reference character position of the first password string, based on the second contextual information associated with the user. 
     
     
       12. A computer program product in accordance with  claim 11 , wherein the string generation rule includes a pattern, which specifies that second contextual information associated with the user is to be inserted at the corresponding reference character position of the first password string. 
     
     
       13. A computer program product in accordance with  claim 8 , wherein the first contextual information associated with the user and the second contextual information associated with the user comprise, respectively, one or more information selected from the group consisting of:
 a location, a time, a date, a month, a day of the week, a pin code, a predefined constant character string, a character sequence based on a grid card, and a one-time password. 
 
     
     
       14. A computer program product in accordance with  claim 8 , wherein the rule for configuring and generating a second password string comprises a rule selected from the group consisting of:
 a rule defined by the user and a rule selected from a predefined set of rules.